Hello,
I need to connect 6 rs-232 to a rcm3700 board, but the board has only two available…
So I thought of using several cards (3000 and 2000 series) to control the 6 rs-232 lines (two rs-232 per board) and by I2C communicate between all them and a control board (RCM3700).
My question is, can i use the two ports RS-232 and one I2C port?
What are the limitations in I2C bus? There are other solutions to communications between the boards?
If you have other solutions to this problem I’m all ears
RCM3600’s and an RCM3700 would be enough.
If you just have 6 serial outputs to control, you could use a couple of RCM3600’s for the output ports and an RCM3700 for the master control unit (particularly if you are getting the input over TCP/IP). The RCM3700 could also handle some of the serial output load. Try using a slave port bus for communicating between the core modules. It’s interrupt driven, 8 bit parallel and fast. The RCM3700 can act as the master.
If you use an I2C bus, it could very easily be a bottleneck in the system, depending on your throughput needs.
